<h1>Currency</h1>
<p>Simple currency conversion.</p>
&nbsp; &#8226;&nbsp; Currency rates from the
<a href="https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html">European Central Bank</a><br>
&nbsp; &#8226;&nbsp; 32 international currencies<br>
&nbsp; &#8226;&nbsp; Currency rates updated daily<br>
&nbsp; &#8226;&nbsp; Last rate update retained for use offline<br>
&nbsp; &#8226;&nbsp; Extra currency for unsupported currencies<br>
&nbsp; &#8226;&nbsp; Ukrainian, German, Italian, French, Spanish and Indonesian translation<br>

<h2>Usage</h2>

<h3>Edit</h3>
<p>
    Touch the current currency value field to edit the value. The
    display will be updated dynamically as you type. Touch
    the
    <b>Done</b>
    button on the numeric keypad to update the value
    field. The whole value field is selected by default when touched so
    it will be overwritten by typing in a new value. To deselect the
    text, touch an adjacent area, like the currency flag.
</p>

<h3>Toolbar</h3>
<p>
    The icons in the toolbar from left to right are:
</p>

<h3>Add</h3>
<p>
    Add a currency to the list. A scrollable list of currencies will pop
    up. Touch an entry to select it or touch the <b>Cancel</b> button
    below the list. Long touch an entry to select it. Once one currency
    is selected others may be added or removed from the selection by
    touching them. Another long touch on another currency will clear the
    list and select the new currency. Touch the <b>Clear</b> button to
    clear the selection. Touch the <b>Select</b> button to add the
    selection. The entries will be added to the list in the order
    selected.
</p>
<h3>Refresh</h3>
<p>
    Get the day's currency rates from
    the
    <a href="https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html">
        ECB</a>. The
    date shown on the left above the currency list will be updated if
    new rates are available. It may show the previous day because the
    rates are updated at around 14:15 CET. The status display on the
    right above the currency list will show 'OK', 'No Connection', 'No
    WiFi' or 'Roaming' according to the update settings. It may show
    'Failed' if the connection times out or fails to connect.
</p>
<h3>Update</h3>
<p>
  Update the currency rate for the extra currency against the Euro. A
  dialog will pop up with the current extra currency rate. Update the
  value and touch the OK button. The display will refresh if the extra
  currency is displayed.
</p>
<h3>Help</h3>
<p>
    Display this help text.
</p>
<h3>Settings</h3>
<p>
    Display the settings screen.
</p>
<h2>Edit currency list</h2>
<p>
    Touch a currency entry in the list to make it current. The old
    current currency will move to the top of the list. Long touch a
    currency entry to select it. Once one currency is selected others
    may be added or removed from the selection by touching them. Another
    long touch on another currency will clear the list and select the
    new currency. The icons in the toolbar will change to:
</p>
<h3>Clear</h3>
<p>
    Clear the selection.
</p>
<h3>Remove</h3>
<p>
    Remove the selected currencies.
</p>
<h3>Chart</h3>
<p>
    Display a chart of selected currencies. If one is selected, the
    chart will be of the current currency and the selected
    currency. If two currencies are selected the chart will be of
    those currencies. Selecting the extra currency will produce a
    blank chart.
</p>
<h3>Copy</h3>
<p>
    Copy selection value to clipboard. Only one value will be copied.
</p>

<h2>Chart</h2>
<p>
    The display shows an interactive chart of the last 90 days of
    historical rates from the
    <a href="https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html">ECB</a>.
    The chart responds to two finger pinch and expand gestures and
    will scroll once expanded. The toolbar icons from left to right
    are:
</p>
<h3>Invert</h3>
<p>The chart will be inverted</p>
<h3>New chart</h3>
<p>
    The scrollable list of currencies will pop up. Select one or two
    currencies from the list as above to replace the current currencies
    in the chart.
</p>
<h3>Refresh</h3>
<p>The chart will be refreshed</p>
<h3>Historical</h3>
<p>
    The chart will be updated with nearly eighteen years of historical
    data currently dating from 1 January 1999. Not all the currencies
    go back this far. <b>Caution</b> &#8211; this will take a while,
    depending on the connection, and will download more than 6Mb of
    data.
</p>
<h3>Range</h3>
<p>
  Change the chart range. The chart will show the latest data, but
  will scroll back. <b>Note</b> &#8211; ranges greater than a quarter will
  have no effect unless the chart is updated with the historical data.
</p>
&nbsp; &#8226;&nbsp; <b>Week</b> &#8211; One week<br>
&nbsp; &#8226;&nbsp; <b>Month</b> &#8211; One month<br>
&nbsp; &#8226;&nbsp; <b>Quarter</b> &#8211; Three months<br>
&nbsp; &#8226;&nbsp; <b>Year</b> &#8211; One year<br>
&nbsp; &#8226;&nbsp; <b>5 Years</b> &#8211; 5 Years<br>
&nbsp; &#8226;&nbsp; <b>Max</b> &#8211; Maximum current range<br>

<h2>Settings</h2>
<h3>Update</h3>
<p>
    <b>WiFi</b> Update while connected on WiFi only
</p>
<p>
    <b>Roaming</b> Update while roaming
</p>

<h3>Numbers</h3>
<p>
    <b>Fraction digits</b> Select the number of digits to display
    after the decimal point. A popup list of options will be
    displayed.
</p>

<h3>Chart</h3>
<p>
    <b>Fill</b> Fill the chart trace
</p>

<h3>Theme</h3>
<p>
    <b>Dark</b> Use dark theme
</p>

<h3>About</h3>

<p>
    <b>About</b> Display the version, copyright and licence.
</p>
